"Tue, 18 Jun 2024 23:18:15"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240618
Only TIME
23:18:15
General datetime
2024-06-18 23:18:15Z
For Database
2024-06-18 23:18:15
For HTTP1.1
Tue, 18 Jun 2024 23:18:15 GMT